Is my PS3 bricked? Permanent black screen...

So here's the story: I wanted to go back to wrap up an old game on my PS3. Turned it on and everything worked fine. As I hadn't turned it on in years, it obviously had an update. I go to update the system and mid update the screen goes black. I wait about 30-45 minutes and gave up and shut off the system. When I turned the system back on - nothing - just a black screen. Hold the power button down to reset video settings - nothing. Hold the button to go to safe mode - nothing. Switch from HDMI to AV out - nothing.

I figured something must've gotten corrupted with the hard drive. So today I received a new hard drive and switched it out. I got a good dose of hopeium, the system gave me video and I installed the OS onto the new hard drive. As soon as the OS was done installing, it went straight back to the black screen and I'm back to the same issue.

I contacted PS support and the person who answered told me it was an issue with the HDMI retimer, which doesn't make any sense to me because I had perfectly good video before the update and after putting in the new hard drive.

Please! Any help would be really greatly appreciated. I'm very stumped.